Tyler, TX (KETK) — Here in East Texas, there are three main vipers people want to stear clear of copperheads, water moccasins, and rattlesnakes.

KETK spoke with a local expert who who knows how to differentiate these three vipers, from the rest of the East Texas snake population.

The tell-tale sign are all in the face.

Venomous snakes have more of a pointed head rather than a more round shape.

And it's the same with the eyes.

Poisonous snakes have more pointed eyes, almost like diamonds, while non-venomous serpents' have rounded eyes.

But the most obvious is when they open their mouths.

Only venomous snakes have fangs, while the others have just regular teeth, or none at all.

But, if you have the option to stay out of the snake's way, you will more than likely have no problem with it.

Now if you do get bit by a snake, whether it's poisonous or not, experts say to get immediate medical attention.

You never know how your body will react, and it's always better to be on the side of caution.